function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ananjeva, Natalia B. & Milto, Konstantin D.', 1],
    ['Barabanov, Andrei V. & Doronin, Igor V.', 1],
    ['Conradie, Werner & Branch, William R. & Watson, Gillian', 1],
    ['Delfino, Massimo & Bailon, Salvador & Pitruzzella, Gaetano', 1],
    ['Dubois, Alain & Bour, Roger', 1],
    ['Elmberg, Johan', 1],
    ['García-Díez, Teresa & González-Fernández, José E.', 1],
    ['Hoser, Raymond', 5],
    ['Ivanov, Martin', 1],
    ['Ivanov, Martin & Böhme, Madelaine', 4],
    ['Ivanov, Martin & Čerňanský, Andrej & Bonilla-Salomón, Isaac', 1],
    ['Laurenti, Joseph Nicolas', 1],
    ['Mizsei, Edvárd & Jablonski, Daniel & Roussos, Stephanos A.', 1],
    ['Rage, Jean-Claude & Bailon, Salvador', 2],
    ['Torres-Roig, Enric & Mitchell, Kieren J. & Alcover, Josep Antoni', 2],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);